The RLS-TS model provides better performance than
Random Walk (RW), Linear Regression (LR), Atuoregression
Integrated Moving Average (ARIMA), or Artificial Neural
Network (ANN) built by Sfetsos and Siriopoulos [6] when
forecasting currency exchange rate between US dollar and GB
pound.
Kernel-based regularized least-square regression (RLSR)
is a new technique originally from the statistical learning (SL)
theory. RLSR can deal with non-linear problems through
mapping the samples into a higher dimension space using a